EP3644339A1 - Apparatus for interrupting an electric current - Google Patents

Apparatus for interrupting an electric current Download PDF

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Publication number
EP3644339A1
EP3644339A1 EP19204397.4A EP19204397A EP3644339A1 EP 3644339 A1 EP3644339 A1 EP 3644339A1 EP 19204397 A EP19204397 A EP 19204397A EP 3644339 A1 EP3644339 A1 EP 3644339A1
Authority
EP
European Patent Office
Prior art keywords
shaft
connecting member
movable
head
opening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19204397.4A
Other languages
German (de)
French (fr)
Other versions
EP3644339B1 (en
Inventor
Patrick Comtois
Patrick Larcher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schneider Electric Industries SAS
Original Assignee
Schneider Electric Industries SAS
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Filing date
Publication date
Application filed by Schneider Electric Industries SAS filed Critical Schneider Electric Industries SAS
Publication of EP3644339A1 publication Critical patent/EP3644339A1/en
Application granted granted Critical
Publication of EP3644339B1 publication Critical patent/EP3644339B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/42—Driving mechanisms, i.e. for transmitting driving force to the contacts using cam or eccentric
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0207—Mounting or assembling the different parts of the circuit breaker
    • H01H71/0228—Mounting or assembling the different parts of the circuit breaker having provisions for interchangeable or replaceable parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/32—Driving mechanisms, i.e. for transmitting driving force to the contacts
    • H01H3/46—Driving mechanisms, i.e. for transmitting driving force to the contacts using rod or lever linkage, e.g. toggle
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00—Mechanisms for operating contacts
    • H01H3/54—Mechanisms for coupling or uncoupling operating parts, driving mechanisms, or contacts
    • H01H3/58—Mechanisms for coupling or uncoupling operating parts, driving mechanisms, or contacts using friction, toothed, or other mechanical clutch
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/002—Details of electromagnetic relays particular to three-phase electromagnetic relays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
    • H01H50/041—Details concerning assembly of relays
    • H01H50/042—Different parts are assembled by insertion without extra mounting facilities like screws, in an isolated mounting part, e.g. stack mounting on a coil-support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
    • H01H50/041—Details concerning assembly of relays
    • H01H50/045—Details particular to contactors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/54—Contact arrangements
    • H01H50/541—Auxiliary contact devices
    • H01H50/545—Self-contained, easily replaceable microswitches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/64—Driving arrangements between movable part of magnetic circuit and contact
    • H01H50/641—Driving arrangements between movable part of magnetic circuit and contact intermediate part performing a rectilinear movement
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/24—Interlocking, locking, or latching mechanisms for interlocking two or more parts of the mechanism for operating contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H2009/0088—Details of rotatable shafts common to more than one pole or switch unit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0207—Mounting or assembling the different parts of the circuit breaker
    • H01H71/0235—Contacts and the arc extinguishing space inside individual separate cases, which are positioned inside the housing of the circuit breaker

Definitions

  • the present invention relates to an apparatus for cutting off an electric current.
  • the patent EP 2,936,534 B1 describes an apparatus for breaking an electric current, such as a contactor, comprising a plurality of breaking elements with separable contacts, each breaking element being associated with a phase of the electric current.
  • each breaking element has fixed electrical contacts and a movable electrical contact movable between open and closed positions to respectively prevent or allow the flow of electric current.
  • an actuator is coupled to a pallet movable in translation to which the movable contacts are attached via a connection interface.
  • each movable contact is carried by a contact carrier on which is fixed a screw head projecting outwards and being hooked to the pallet by means of a fork integral with the pallet.
  • connection interface connecting the movable contacts to the movable pallet is improved.
  • connection and the locking between the movable pallet and each movable part are carried out by rotating the shaft and without having recourse to a translational movement capable of being hampered by equipment or obstacles located near the switching device.
  • the figure 1 shows an apparatus for breaking an electric current 1, such as a contactor.
  • the switching device 1 is in particular adapted to interrupt or, alternately, authorize the circulation of an electric current, for example in response to a control signal.
  • the switching device 1 is intended to be connected in an electrical distribution installation.
  • the device 1 comprises a cut-off block 2, a connection interface 3, an actuation block 4 and electrical connection pads 5 upstream and downstream.
  • the cut-off block 2 has separable contacts housed in one or more individual cut-off elements.
  • the electrical contacts can be moved between open and closed positions, respectively to interrupt or authorize the flow of electric current between the connection pads 5.
  • connection interface 3 is mounted between the actuation block 4 and the cut-off block 2 in order to allow an actuator of the actuation block 4 to move the separable contacts of the cut-off block 2 between the open positions and closing.
  • the cut-off block 2 comprises a base 21 and at least one cut-off element 22, each cut-off element 22 being associated with a phase of the electric current.
  • each switching element 22 is received in a removable manner in a housing defined by the base 21.
  • the base 21 is fixed to an electrical panel when the switching device 1 is in the mounted configuration.
  • the breaking device 1 is a multipolar device adapted to interrupt a polyphase current, in particular a three-phase current, and for this purpose comprises a plurality of preferably identical breaking elements 22 received in the base 21.
  • the breaking device 1 comprises three breaking elements 22.
  • the number of breaking elements 22 can be different, for example equal to four in the case of a three-phase current with neutral.
  • each breaking element 22 comprises two fixed electrical contacts 221 and a movable electrical contact 222.
  • the fixed contacts 221 are respectively electrically connected to the upstream and downstream connection pads 5.
  • the movable contact 222 is movable relative to the fixed contacts 221, here by translation in a direction of movement, between the open position and the closed position.
  • the movable contact 222 is integral with a movable bridge 223 displaceable in translation relative to a body 224 fixed to a housing of the breaking element 22.
  • each cutting element 22 also includes an elastic return member 225, such as a helical spring, which exerts pressure on the movable contact 222 in the direction of the fixed contacts 221 in order to accentuate the electrical contact between fixed contacts 221 and mobile 222 when these fixed contacts 221 and mobile 222 are in the closed position.
  • an elastic return member 225 such as a helical spring
  • Each fixed contact 221 includes a contact pad 226 made of electrically conductive material.
  • the movable contact 222 comprises contact pads 227 arranged opposite the contact pads 226. In the closed position, the pads 226 and 227 are brought into contact, allowing the passage of electric current between the fixed contacts 221 upstream and downstream.
  • Each breaking element 22 also includes a connecting member 228 integral in translation with the movable bridge 223 and making it possible to mechanically connect the movable bridge 223 with the actuator block 4, as explained below.
  • the connecting member 228 extends projecting from a front face of the cutting element 22.
  • the connecting member 228 here comprises a head, for example of spherical shape, and a body extending longitudinally from a base of the head to the movable bridge 223 and forming a connection portion.
  • the maximum width of the longitudinal body is less than the largest width of the head of the connecting member 228.
  • each connecting member 228 is made of plastic, for example molded plastic.
  • the actuating block 4 comprises an actuator 41 and a movable pallet 42. To facilitate reading of the figure 3 , only part of the actuating block 4 is illustrated.
  • the actuator 41 is arranged to reversibly move the movable pallet 42 in translation along a longitudinal axis Y4.
  • the longitudinal axis Y4 is parallel with the direction of movement of the movable contacts 222 and extends between the front and the back of the device 1.
  • the actuator 41 comprises an electromagnet and the movable pallet 42 comprises a magnetic material, for example a ferromagnetic material.
  • the interface 3 comprises a box 31 fixedly mounted on a front face of the cut-off block 2, for example by being fixedly connected to the base 21.
  • the actuation block 4 is fixed on a front face of the interface 3 integrally with the housing 31.
  • the housing 31 here comprises through openings 331 each disposed opposite one of the cut-off elements 22.
  • the interface 3 also includes a shaft 32 extending along a longitudinal axis X32 and a support structure 33 receiving the shaft 32.
  • the axis X32 is perpendicular to the axis Y4 .
  • the X32 axis is oriented horizontally.
  • the shaft 32 is here mounted in rotation relative to the support structure 33.
  • the support structure 33 defines a housing 331 for receiving the shaft 32.
  • the housing 311 has the shape of a cylindrical or tubular cavity extending along the axis X32 whose ends opposite forms openings which allow access to the ends 323 of the shaft 32.
  • the support structure 33 is integral with the movable pallet 332.
  • the movable pallet 42 is coupled to the support structure 33 by means of a mechanical device of which only one element 43 is visible on the figure 3 .
  • the support structure 33 also includes windows 332 formed on a rear face and which open towards the interior of the housing 331. In the assembled configuration, the windows 332 are aligned with the openings 311 of the housing 31 and are thus aligned with the elements of cutoff 22, preferably aligned with the connecting members 228 in the direction of movement, so as to allow passage of the connecting members 228 through windows 332 and openings 311.
  • the shaft 32 includes eccentric fastening elements 321 each intended to be associated with a connecting member 228. It is therefore understood that the shaft 32 here comprises as many fastening elements 321 as cut-off elements 22.
  • the fasteners 321 are aligned along the axis X32.
  • each fastening element 321 has a cylindrical shape centered on the axis X32 and defines an internal housing delimited by bottom walls perpendicular to the axis X32 and delimited at least in part by a side wall 3221 parallel to the X32 axis which connects the two opposite bottom walls.
  • Each fixing element 321 has a first opening 3222 and a second opening 3223.
  • the openings 3222 and 3223 are each formed in the side wall 321 by describing an arc centered around the axis X32.
  • the fixing elements 321 are identical and the respective openings 3222 and 3223 of the fixing elements 321 are aligned with one another.
  • the shaft 32 also comprises connection portions 322, for example in the form of a rod or of a cylinder, aligned along the axis X32, which connect the elements of fixing 321 two by two.
  • connection portion 322 connects two fastening elements 321 immediately adjacent by their facing bottom walls.
  • the first opening 3222 has a width strictly less than the width of the second opening 3223.
  • the widths of the first and second openings are here measured parallel to the axis X32.
  • the openings 3222 and 3223 are contiguous and thus form a continuous opening of variable width extending at least over part of the periphery of the side wall 321.
  • the width of the second opening 3223 is greater than the greatest width of the head of the connecting member 228, that is to say here the diameter of the head of the connecting member 228.
  • the width of the first opening 3222 is less than said greatest width of the connecting member 228, but is greater than the greatest width of the connecting portion of the connecting member 228.
  • the shaft 32 is movable, by rotation around the axis X32, between a first position and a second position.
  • the second opening 3223 is aligned with the window 332 with which the fixing element 321 is associated, which allows the insertion of the connecting member 228 inside the housing defined by said fixing 321.
  • the head of the connecting member 228 can then be fully inserted inside said housing.
  • the head of each connecting member 228 is freely movable in translation relative to said fastening element 321 to decouple the movable pallet 42 from each connecting member 228.
  • the head of the connecting member is retained inside the internal housing. This first position corresponds to an unlocked state of the interface 3.
  • the heads of the connecting members 228 are here aligned along an axis parallel to the axis X32.
  • the first opening 3222 is aligned with said window 332, which prevents the insertion of the connecting member 228 inside said housing or, on the contrary, prevents the withdrawal of the connecting member 228 outside the housing defined by said fixing element 321, since the width of the first opening is less than the greatest width of the head of the connecting member 228.
  • This second position corresponds to a locked state of the interface 3.
  • connection interface 3 is switchable between a locked state and an unlocked state.
  • the support structure 33 and the movable pallet 32 are integral in translation with the movable bridges 223 of the breaking elements 22.
  • the movable contacts 222 can be moved by the actuator 41 between the open position and the closed position.
  • the support structure 33 and the movable pallet 32 are decoupled from the movable bridges 223 of the breaking elements 22.
  • the actuator 41 is no longer able to move the movable contacts 222 between the position d opening and closing position.
  • the shaft 32 comprises at least one control portion 323 placed at one end of the shaft 32 and allowing an operator to turn the shaft 32 between the first position and the second position around the longitudinal axis X32.
  • the control portion 322 is able to cooperate by complementary shape with a tool such as a screwdriver or a wrench.
  • control portion 322 has an imprint formed on an end surface of the shaft 32 perpendicular to the axis X32 and having a slit shape, or a cruciform shape, or a shape of polygon, or any other similar form.
  • control portion 323 is accessible from the outside of the housing 31, here through an opening formed in a side wall of the housing 31, which allows the insertion of the tool rod.
  • each end of the shaft 32 is provided with such a control portion 323.
  • connection interface 3 comprises an operating device 324 including a manual control member 325, such as a pivoting lever, coupled to the shaft 32 or to a control portion 323 of the shaft 32 to rotate the shaft 32 around its longitudinal axis X32.
  • the member 325 is mounted on a lateral face of the housing 31.
  • the shaft 32 is made of a metallic material, for example a Zamak alloy.
  • the shaft 32 is made for example of plastic.
  • the shaft 32 is made of electrically conductive material, for example the aforementioned metallic material
  • the member 228 is made of electrically conductive material, for example a metallic material
  • the shaft 32 has a reduction in diameter, each receiving an inter-phase partition formed by the support structure 33, for the purpose of inter-phase electrical insulation.
  • Each inter-phase partition forms a portion of one of the windows 332.
  • the shaft 32 is in one piece, that is to say that the fastening elements 321 are here formed in one piece with the connection portions 322 and the control portions 323.
  • connection interface 3 An example of operation for locking the connection interface 3 is now described with reference to figures 4 to 6 .
  • the interface 3 is configuration assembled with the actuating block 4, while being dissociated from the cutting block 2.
  • the shaft 32 is in the first position.
  • the interface 3 is translated to the cut-off block 2, here in the direction of movement illustrated by the arrow F1, along the direction of movement, until the head of each connecting member 228 of each cut-off elements 22 is received in the housing delimited by the corresponding fixing member 321 after having passed through the second opening 3223 of this fixing member 321.
  • the housing 31 is in contact with the base 21, as shown in the figure 5 , and can then be attached to the base 21.
  • the switching device 1 is then in its assembled configuration.
  • the interface 3 is always in the unlocked state, so that a displacement of the movable pallet 42 by the actuator 41 does not induce any displacement of the movable contacts 222 between the open and closed positions.
  • the shaft 32 is turned to its second position, for example by means of the control portion 323 and / or of the lever 325, in the direction illustrated by the arrow F2.
  • the head of the connecting member 228 is prevented from leaving the housing delimited by the attachment 321 during a translation in the direction of movement, in particular because the first opening 3222 has a width less than the width of the head of the connecting member 228.
  • each fixing element 332 is effected on the head of the associated connecting member 228, in order to avoid accidental uncoupling of these elements during operation, in particular under the effect of vibrations.
  • each member 228 and its respective fixing element 332 there is provided a backlash-free connection between each member 228 and its respective fixing element 332, in particular by using materials having a certain elasticity, and / or by details of complementary shapes.
  • the interface 3 is in the locked state, so that a displacement of the movable pallet 42 in translation along the axis of displacement causes a corresponding displacement of the movable contacts 222 between the open and closed positions.
  • the interface 3 makes it possible to reduce the space necessary to mount and couple the actuation block 4 to the cut-off block 2 during the installation of the device 1, since it is no longer necessary to move the movable pallet 42 in vertical translation to hang it on the connecting members 228.
  • the locking is obtained by turning the shaft 32 after positioning the interface 3 in contact with the cut-off block 2 by translation along the direction of travel.
  • the unlocking and disassembly of the actuation block and the cut-off block 2 are also simplified, since the unlocking is obtained simply by turning the shaft 32 in the opposite direction.
  • connection interface 3 can remain in the unlocked state even when it is mounted on the cut-off block 2. This allows an operator to power the actuator 41 and move the movable pallet 42, for example to carry out tests of the apparatus 1 in real conditions, without however setting the moving contacts 222 in motion. Thus, the risk of electrical accident is reduced.
  • the spherical head of the connecting member 228 has flat side faces 2281 in the form of flats. This makes it possible to reduce the width of the openings 311 and of the windows 332 and therefore to reduce the lateral dimensions of the device 1. In this case, the greatest width of the head of the connecting member 228 is measured between the faces. flat side 2281.
  • the connecting member 228 can have a different shape, for example a valve or screw shape with a flat head.

Abstract

L'invention concerne un appareil de coupure d'un courant électrique, comportant un bloc de coupure (2) comprenant un contact électrique mobile (222) et un organe de liaison (228) solidaires, ainsi qu'un bloc d'actionnement (4) comportant un actionneur (41) et une palette mobile (42). Selon l'invention, l'appareil comporte une interface de connexion (3) améliorée, comportant un arbre (32) pivotant, incluant un élément de fixation à excentrique, délimitant un logement interne apte à recevoir une tête de l'organe de liaison (228). L'interface de connexion est commutable, par rotation de l'arbre (32), entre un état verrouillé, dans lequel la tête de l'organe de liaison (228) est retenue dans le logement interne de l'élément de fixation à excentrique pour maintenir la palette mobile (42) solidaire en translation avec l'organe de liaison (228), et un état déverrouillé, dans lequel la tête de l'organe de liaison (228) est librement déplaçable en translation par rapport audit élément de fixation à excentrique pour découpler la palette mobile de l'organe de liaison.

Figure imgaf001
The invention relates to an apparatus for interrupting an electric current, comprising an isolating block (2) comprising a movable electrical contact (222) and a connecting member (228) integral with each other, as well as an actuating block (4 ) comprising an actuator (41) and a movable pallet (42). According to the invention, the device comprises an improved connection interface (3), comprising a pivoting shaft (32), including an eccentric fixing element, delimiting an internal housing capable of receiving a head of the connecting member ( 228). The connection interface is switchable, by rotation of the shaft (32), between a locked state, in which the head of the connecting member (228) is retained in the internal housing of the eccentric fixing element to maintain the movable pallet (42) integral in translation with the connecting member (228), and an unlocked state, in which the head of the connecting member (228) is freely movable in translation relative to said fixing element eccentric to decouple the movable pallet from the connecting member.
Figure imgaf001

Description

La présente invention concerne un appareil de coupure d'un courant électrique.The present invention relates to an apparatus for cutting off an electric current.

Le brevet EP 2 936 534 B1 décrit un appareil de coupure d'un courant électrique, tel qu'un contacteur, comportant une pluralité d'éléments de coupure à contacts séparables, chaque élément de coupure étant associé à une phase du courant électrique.The patent EP 2,936,534 B1 describes an apparatus for breaking an electric current, such as a contactor, comprising a plurality of breaking elements with separable contacts, each breaking element being associated with a phase of the electric current.

Typiquement, chaque élément de coupure comporte des contacts électriques fixes et un contact électrique mobile déplaçable entre des positions d'ouverture et de fermeture pour, respectivement, empêcher ou autoriser la circulation du courant électrique.Typically, each breaking element has fixed electrical contacts and a movable electrical contact movable between open and closed positions to respectively prevent or allow the flow of electric current.

Pour déplacer les contacts mobiles simultanément vers une même position d'ouverture ou de fermeture, un actionneur est couplé à une palette mobile en translation à laquelle les contacts mobiles sont accrochés par l'intermédiaire d'une interface de connexion. Par exemple, chaque contact mobile est porté par un porte-contact sur lequel est fixé une tête de vis faisant saillie vers l'extérieur et étant accrochée à la palette par l'intermédiaire d'une fourche solidaire à la palette.To move the movable contacts simultaneously to the same open or closed position, an actuator is coupled to a pallet movable in translation to which the movable contacts are attached via a connection interface. For example, each movable contact is carried by a contact carrier on which is fixed a screw head projecting outwards and being hooked to the pallet by means of a fork integral with the pallet.

Pour accrocher ou décrocher la palette aux contacts mobiles, il est nécessaire de déplacer la palette en translation suivant une direction différente de la direction de translation des contacts, généralement suivant une direction verticale. Lorsque l'appareil de coupure est déjà au moins partiellement installé dans un tableau ou une armoire électrique, un tel mouvement de translation peut être difficile à réaliser par manque de place, par exemple à cause des dimensions réduites de l'armoire électrique ou à cause de la présence d'autres équipements au voisinage de l'appareil de coupure. Ainsi, il est difficile de démonter et/ou de remonter l'appareil de coupure, ce qui rend les opérations d'installation et de maintenance plus compliquées.To hook or unhook the pallet to the movable contacts, it is necessary to move the pallet in translation in a direction different from the direction of translation of the contacts, generally in a vertical direction. When the switching device is already at least partially installed in a switchboard or an electrical cabinet, such a translational movement can be difficult to achieve due to lack of space, for example because of the reduced dimensions of the electrical cabinet or because the presence of other equipment in the vicinity of the switching device. Thus, it is difficult to dismantle and / or reassemble the switching device, which makes installation and maintenance operations more complicated.

Il existe donc un besoin pour un appareil de coupure d'un courant électrique tel que décrit ci-dessus dans lequel l'interface de connexion reliant les contacts mobiles à la palette mobile est améliorée.There is therefore a need for an apparatus for cutting off an electric current as described above in which the connection interface connecting the movable contacts to the movable pallet is improved.

A cet effet, un aspect de l'invention concerne un appareil de coupure d'un courant électrique, comportant :

  • un bloc de coupure à contact séparables incluant au moins un élément de coupure, chaque élément de coupure comprenant un contact électrique fixe, un contact électrique mobile déplaçable en translation par rapport aux contacts électriques fixes entre une position de fermeture et une position d'ouverture, et un organe de liaison solidaire en translation avec le contact électrique mobile ;
  • un bloc d'actionnement comportant un actionneur et une palette mobile couplée à l'actionneur ;
To this end, one aspect of the invention relates to an apparatus for cutting off an electric current, comprising:
  • a cut-off block with separable contact including at least one cut-off element, each cut-off element comprising a fixed electrical contact, a movable electrical contact movable in translation relative to the fixed electrical contacts between a closed position and an open position, and a connecting member secured in translation with the movable electrical contact;
  • an actuation block comprising an actuator and a movable pallet coupled to the actuator;

Selon l'invention, l'appareil de coupure comporte en outre une interface de connexion intercalée entre le bloc de coupure et le bloc d'actionnement, l'interface de connexion comportant un arbre et une structure de support solidaire en translation de la palette mobile, l'arbre étant monté pivotant autour de son axe longitudinal par rapport à la structure de support, l'arbre incluant au moins un élément de fixation à excentrique, chaque élément de fixation à excentrique délimitant un logement interne apte à recevoir une tête d'un des organes de liaison, l'interface de connexion étant commutable, par rotation de l'arbre autour de son axe longitudinal, entre :

  • un état verrouillé, dans lequel la tête de chaque organe de liaison est retenue à l'intérieur du logement interne d'un des éléments de fixation à excentrique pour maintenir la palette mobile solidaire en translation avec chaque organe de liaison, et
  • un état déverrouillé, dans lequel la tête de chaque organe de liaison est librement déplaçable en translation par rapport audit élément de fixation à excentrique pour découpler la palette mobile de chaque organe de liaison.
According to the invention, the cut-off device further comprises a connection interface interposed between the cut-off block and the actuation block, the connection interface comprising a shaft and a support structure integral in translation with the movable pallet , the shaft being pivotally mounted about its longitudinal axis with respect to the support structure, the shaft including at least one eccentric fixing element, each eccentric fixing element defining an internal housing capable of receiving a head one of the connecting members, the connection interface being switchable, by rotation of the shaft around its longitudinal axis, between:
  • a locked state, in which the head of each connecting member is retained inside the internal housing of one of the eccentric fixing elements to keep the movable pallet integral in translation with each connecting member, and
  • an unlocked state, in which the head of each connecting member is freely movable in translation relative to said eccentric fixing element to decouple the movable pallet from each connecting member.

Grâce à l'invention, la connexion et le verrouillage entre la palette mobile et chaque partie mobile sont réalisés en faisant tourner l'arbre et sans avoir recours à un mouvement de translation susceptible d'être entravé par des équipements ou obstacles situés à proximité de l'appareil de coupure.Thanks to the invention, the connection and the locking between the movable pallet and each movable part are carried out by rotating the shaft and without having recourse to a translational movement capable of being hampered by equipment or obstacles located near the switching device.

Selon des aspects avantageux mais non obligatoires, un tel appareil de coupure peut incorporer une ou plusieurs des caractéristiques suivantes, prises isolément ou suivant toute combinaison techniquement admissible :

  • Chaque élément de fixation à excentrique présente une forme cylindrique centrée sur l'axe longitudinal, le logement interne étant délimité au moins en partie par une paroi latérale parallèle à l'axe longitudinal et comprenant une première ouverture et une deuxième ouverture, la largeur de la première ouverture étant largeur strictement inférieure à la largeur de la deuxième ouverture, les première et deuxième ouvertures étant attenantes et formant une ouverture continue de largeur variable, la largeur de la deuxième ouverture étant supérieure à la plus grande largeur de la tête de l'organe de liaison, la largeur de la première ouverture étant inférieure à la plus grande largeur de la tête de l'organe de liaison, alors que, dans l'état verrouillé, chaque première ouverture est alignée et placée en regard avec un organe de liaison et alors que, dans l'état déverrouillé, chaque deuxième ouverture est alignée et placée en regard avec un organe de liaison.
  • L'arbre comporte au moins une portion de commande placée à une extrémité de l'arbre pour tourner l'arbre autour de son axe longitudinal, la portion de commande étant apte à coopérer par complémentarité de forme avec un outil.
  • La portion de commande comporte une empreinte formée sur une surface d'extrémité de l'arbre perpendiculaire à l'axe longitudinal, par exemple une empreinte présentant une forme de fente, ou une forme cruciforme, ou une forme de polygone.
  • L'interface de connexion comporte un dispositif de manœuvre incluant un organe de commande manuelle couplé à l'arbre pour tourner l'arbre autour de son axe longitudinal.
  • L'organe de commande manuelle est un levier pivotant monté sur une face latérale d'un boîtier de l'interface de connexion.
  • La tête de l'organe de liaison présente une forme sphérique.
  • La tête de l'organe de liaison comporte des faces latérales plates.
  • L'arbre est monobloc.
  • L'arbre est réalisé en un matériau métallique, par exemple en alliage Zamak.
According to advantageous but not compulsory aspects, such a switching device can incorporate one or more of the following characteristics, taken in isolation or according to any technically admissible combination:
  • Each eccentric fastener has a cylindrical shape centered on the longitudinal axis, the internal housing being delimited at least in part by a side wall parallel to the longitudinal axis and comprising a first opening and a second opening, the width of the first opening being width strictly less than the width of the second opening, the first and second openings being adjoining and forming a continuous opening of variable width, the width of the second opening being greater than the largest width of the head of the member connecting, the width of the first opening being less than the largest width of the head of the connecting member, while, in the locked state, each first opening is aligned and placed opposite with a connecting member and while, in the unlocked state, each second opening is aligned and placed opposite with a connecting member.
  • The shaft comprises at least one control portion placed at one end of the shaft to turn the shaft around its longitudinal axis, the control portion being able to cooperate by form complementarity with a tool.
  • The control portion includes an imprint formed on an end surface of the shaft perpendicular to the longitudinal axis, for example an imprint having a slit shape, or a cruciform shape, or a polygon shape.
  • The connection interface comprises an operating device including a manual control member coupled to the shaft to turn the shaft around its longitudinal axis.
  • The manual control member is a pivoting lever mounted on a side face of a housing of the connection interface.
  • The head of the connecting member has a spherical shape.
  • The head of the connecting member has flat side faces.
  • The tree is in one piece.
  • The shaft is made of a metallic material, for example a Zamak alloy.

L'invention sera mieux comprise et d'autres avantages de celle-ci apparaîtront plus clairement à la lumière de la description qui va suivre, d'un mode de réalisation d'un appareil de coupure d'un courant électrique donnée uniquement à titre d'exemple et faite en référence aux dessins annexés, dans lesquels :

  • la figure 1 est une représentation schématique d'un appareil de coupure d'un courant électrique selon des modes de réalisation de l'invention ;
  • la figure 2 est une représentation schématique selon une vue partiellement éclatée d'un bloc de coupure de l'appareil de coupure de la figure 1 ;
  • la figure 3 est une représentation schématique selon une vue partiellement éclatée d'un actionneur et d'une interface de connexion de l'appareil de coupure de la figure 1 ;
  • les figures 4 à 6 sont des vues en coupe de l'appareil de coupure de la figure 1 illustrant une commutation de l'interface de connexion de la figure 2 vers un état verrouillé.
The invention will be better understood and other advantages thereof will appear more clearly in the light of the description which follows, of an embodiment of an apparatus for cutting off an electric current given solely by way of 'example and made with reference to the accompanying drawings, in which:
  • the figure 1 is a schematic representation of an electric current cutoff device according to embodiments of the invention;
  • the figure 2 is a schematic representation according to a partially exploded view of a cut-off block of the cut-off device of the figure 1 ;
  • the figure 3 is a schematic representation according to a partially exploded view of an actuator and of a connection interface for the cut-off device of the figure 1 ;
  • the figures 4 to 6 are sectional views of the cut-off device of the figure 1 illustrating switching of the connection interface of the figure 2 to a locked state.

La figure 1 représente un appareil de coupure d'un courant électrique 1, tel qu'un contacteur. L'appareil de coupure 1 est notamment adapté pour interrompre ou, en alternance, autoriser la circulation d'un courant électrique, par exemple en réponse à un signal de commande. Selon des exemples, l'appareil de coupure 1 est destiné à être connecté dans une installation de distribution électrique.The figure 1 shows an apparatus for breaking an electric current 1, such as a contactor. The switching device 1 is in particular adapted to interrupt or, alternately, authorize the circulation of an electric current, for example in response to a control signal. According to examples, the switching device 1 is intended to be connected in an electrical distribution installation.

Selon des modes de mise en oeuvre, l'appareil 1 comporte un bloc de coupure 2, une interface de connexion 3, un bloc d'actionnement 4 et des plages de raccordement électrique 5 amont et aval.According to embodiments, the device 1 comprises a cut-off block 2, a connection interface 3, an actuation block 4 and electrical connection pads 5 upstream and downstream.

Le bloc de coupure 2 comporte des contacts séparables logés dans un ou plusieurs éléments de coupure individuels. Les contacts électriques sont déplaçables entre des positions d'ouverture et de fermeture, respectivement pour interrompre ou autoriser la circulation du courant électrique entre les plages de raccordement 5.The cut-off block 2 has separable contacts housed in one or more individual cut-off elements. The electrical contacts can be moved between open and closed positions, respectively to interrupt or authorize the flow of electric current between the connection pads 5.

L'interface de connexion 3 est montée entre le bloc d'actionnement 4 et le bloc de coupure 2 en vue de permettre à un actionneur du bloc d'actionnement 4 de déplacer les contacts séparables du bloc de coupure 2 entre les positions d'ouverture et de fermeture.The connection interface 3 is mounted between the actuation block 4 and the cut-off block 2 in order to allow an actuator of the actuation block 4 to move the separable contacts of the cut-off block 2 between the open positions and closing.

Comme illustré sur la figure 2, le bloc de coupure 2 comporte une embase 21 et au moins un élément de coupure 22 chaque élément de coupure 22 étant associé à une phase du courant électrique.As illustrated in the figure 2 , the cut-off block 2 comprises a base 21 and at least one cut-off element 22, each cut-off element 22 being associated with a phase of the electric current.

Par exemple, chaque élément de coupure 22 est reçu de façon amovible dans un logement défini par l'embase 21. Par exemple, l'embase 21 est fixée sur un tableau électrique lorsque l'appareil de coupure 1 est en configuration montée.For example, each switching element 22 is received in a removable manner in a housing defined by the base 21. For example, the base 21 is fixed to an electrical panel when the switching device 1 is in the mounted configuration.

Selon des modes de réalisation, l'appareil de coupure 1 est un appareil multipolaire adapté pour interrompre un courant polyphasé, notamment un courant triphasé, et comporte à cet effet une pluralité d'éléments de coupure 22 préférentiellement identiques reçus dans l'embase 21.According to embodiments, the breaking device 1 is a multipolar device adapted to interrupt a polyphase current, in particular a three-phase current, and for this purpose comprises a plurality of preferably identical breaking elements 22 received in the base 21.

Dans l'exemple illustré, l'appareil de coupure 1 comporte trois éléments de coupure 22. En variante, le nombre d'éléments de coupure 22 peut être différent, par exemple égal à quatre dans le cas d'un courant triphasé avec neutre.In the example illustrated, the breaking device 1 comprises three breaking elements 22. As a variant, the number of breaking elements 22 can be different, for example equal to four in the case of a three-phase current with neutral.

Comme cela est visible sur la figure 4, chaque élément de coupure 22 comporte deux contacts électriques fixes 221 et un contact électrique mobile 222.As can be seen on the figure 4 , each breaking element 22 comprises two fixed electrical contacts 221 and a movable electrical contact 222.

Les contacts fixes 221 sont respectivement connectés électriquement aux plages de raccordement 5 amont et aval. Le contact mobile 222 est déplaçable par rapport aux contacts fixes 221, ici par translation selon une direction de déplacement, entre la position d'ouverture et la position de fermeture.The fixed contacts 221 are respectively electrically connected to the upstream and downstream connection pads 5. The movable contact 222 is movable relative to the fixed contacts 221, here by translation in a direction of movement, between the open position and the closed position.

Selon des modes de réalisation, le contact mobile 222 est solidaire d'un pont mobile 223 déplaçable en translation par rapport à un corps 224 fixé à un boîtier de l'élément de coupure 22.According to embodiments, the movable contact 222 is integral with a movable bridge 223 displaceable in translation relative to a body 224 fixed to a housing of the breaking element 22.

Par exemple, chaque élément de coupure 22 comporte également un organe de rappel élastique 225, tel qu'un ressort hélicoïdal, qui exerce une pression sur le contact mobile 222 en direction des contacts fixes 221 afin d'accentuer le contact électrique entre contacts fixes 221 et mobile 222 lorsque ces contacts fixes 221 et mobile 222 sont dans la position de fermeture.For example, each cutting element 22 also includes an elastic return member 225, such as a helical spring, which exerts pressure on the movable contact 222 in the direction of the fixed contacts 221 in order to accentuate the electrical contact between fixed contacts 221 and mobile 222 when these fixed contacts 221 and mobile 222 are in the closed position.

Chaque contact fixe 221 comporte une pastille de contact 226 en matériau électriquement conducteur. De façon correspondante, le contact mobile 222 comporte des pastilles de contact 227 disposées en regard des pastilles de contact 226. Dans la position de fermeture, les pastilles 226 et 227 sont mises en contact, permettant le passage du courant électrique entre les contacts fixes 221 amont et aval.Each fixed contact 221 includes a contact pad 226 made of electrically conductive material. Correspondingly, the movable contact 222 comprises contact pads 227 arranged opposite the contact pads 226. In the closed position, the pads 226 and 227 are brought into contact, allowing the passage of electric current between the fixed contacts 221 upstream and downstream.

Chaque élément de coupure 22 comporte également un organe de liaison 228 solidaire en translation du pont mobile 223 et permettant de connecter mécaniquement le pont mobile 223 avec le bloc actionneur 4, comme expliqué dans ce qui suit.Each breaking element 22 also includes a connecting member 228 integral in translation with the movable bridge 223 and making it possible to mechanically connect the movable bridge 223 with the actuator block 4, as explained below.

Selon des exemples, l'organe de liaison 228 s'étend en saillie sur une face avant de l'élément de coupure 22. L'organe de liaison 228 comporte ici une tête, par exemple de forme sphérique, et un corps s'étendant longitudinalement depuis une base de la tête jusqu'au pont mobile 223 et formant une portion de raccordement. Notamment, la largeur maximale du corps longitudinal est inférieure à la plus grande largeur de la tête de l'organe de liaison 228.According to examples, the connecting member 228 extends projecting from a front face of the cutting element 22. The connecting member 228 here comprises a head, for example of spherical shape, and a body extending longitudinally from a base of the head to the movable bridge 223 and forming a connection portion. In particular, the maximum width of the longitudinal body is less than the largest width of the head of the connecting member 228.

Par exemple, chaque organe de liaison 228 est réalisé en matière plastique, par exemple en plastique moulé.For example, each connecting member 228 is made of plastic, for example molded plastic.

Comme illustré sur la figure 3, le bloc d'actionnement 4 comporte un actionneur 41 et une palette mobile 42. Pour faciliter la lecture de la figure 3, seule une partie du bloc d'actionnement 4 est illustrée.As illustrated in the figure 3 , the actuating block 4 comprises an actuator 41 and a movable pallet 42. To facilitate reading of the figure 3 , only part of the actuating block 4 is illustrated.

L'actionneur 41 est agencé pour déplacer réversiblement la palette mobile 42 en translation selon un axe longitudinal Y4. Lorsque l'appareil de coupure 1 est dans une configuration assemblée, l'axe longitudinal Y4 est parallèle avec la direction de déplacement des contacts mobiles 222 et s'étend entre l'avant et l'arrière de l'appareil 1.The actuator 41 is arranged to reversibly move the movable pallet 42 in translation along a longitudinal axis Y4. When the switching device 1 is in an assembled configuration, the longitudinal axis Y4 is parallel with the direction of movement of the movable contacts 222 and extends between the front and the back of the device 1.

Selon des exemples, l'actionneur 41 comporte un électroaimant et la palette mobile 42 comporte un matériau magnétique, par exemple un matériau ferromagnétique.According to examples, the actuator 41 comprises an electromagnet and the movable pallet 42 comprises a magnetic material, for example a ferromagnetic material.

Selon des modes de réalisation, l'interface 3 comporte un boîtier 31 monté fixement sur une face avant du bloc de coupure 2, par exemple en étant connecté fixement à l'embase 21. En configuration assemblée, le bloc d'actionnement 4 est fixé sur une face avant de l'interface 3 solidairement au boîtier 31.According to embodiments, the interface 3 comprises a box 31 fixedly mounted on a front face of the cut-off block 2, for example by being fixedly connected to the base 21. In the assembled configuration, the actuation block 4 is fixed on a front face of the interface 3 integrally with the housing 31.

Comme illustré sur la figure 3, le boîtier 31 comporte ici des ouvertures 331 traversantes chacune disposée en regard d'un des éléments de coupure 22.As illustrated in the figure 3 , the housing 31 here comprises through openings 331 each disposed opposite one of the cut-off elements 22.

L'interface 3 comporte également un arbre 32 s'étendant selon un axe longitudinal X32 et une structure de support 33 recevant l'arbre 32. Lorsque l'appareil 1 est en configuration assemblée, l'axe X32 est perpendiculaire à l'axe Y4. Par exemple, l'axe X32 est orienté horizontalement. L'arbre 32 est ici monté en rotation par rapport à la structure de support 33.The interface 3 also includes a shaft 32 extending along a longitudinal axis X32 and a support structure 33 receiving the shaft 32. When the device 1 is in assembled configuration, the axis X32 is perpendicular to the axis Y4 . For example, the X32 axis is oriented horizontally. The shaft 32 is here mounted in rotation relative to the support structure 33.

Selon des modes de mise en œuvre, la structure de support 33 définit un logement 331 de réception de l'arbre 32. Par exemple, le logement 311 présente une forme de cavité cylindrique ou tubulaire s'étendant selon l'axe X32 dont les extrémités opposées forment des ouvertures qui permettent d'accéder à des extrémités 323 de l'arbre 32.According to embodiments, the support structure 33 defines a housing 331 for receiving the shaft 32. For example, the housing 311 has the shape of a cylindrical or tubular cavity extending along the axis X32 whose ends opposite forms openings which allow access to the ends 323 of the shaft 32.

En configuration assemblée, la structure de support 33 est solidaire de la palette mobile 332. Par exemple, la palette mobile 42 est couplée à la structure de support 33 au moyen d'un dispositif mécanique dont seul un élément 43 est visible sur la figure 3.In the assembled configuration, the support structure 33 is integral with the movable pallet 332. For example, the movable pallet 42 is coupled to the support structure 33 by means of a mechanical device of which only one element 43 is visible on the figure 3 .

La structure de support 33 comporte également des fenêtres 332 ménagées sur une face arrière et qui débouchent vers l'intérieur du logement 331. En configuration assemblée, les fenêtres 332 sont alignées avec les ouvertures 311 du boîtier 31 et sont ainsi alignées avec les éléments de coupure 22, de préférence alignées avec les organes de liaison 228 selon à la direction de déplacement, de manière à autoriser le passage des organes de liaison 228 au travers des fenêtres 332 et ouvertures 311.The support structure 33 also includes windows 332 formed on a rear face and which open towards the interior of the housing 331. In the assembled configuration, the windows 332 are aligned with the openings 311 of the housing 31 and are thus aligned with the elements of cutoff 22, preferably aligned with the connecting members 228 in the direction of movement, so as to allow passage of the connecting members 228 through windows 332 and openings 311.

L'arbre 32 comporte des éléments de fixation à excentrique 321 chacun destiné à être associé à un organe de liaison 228. On comprend donc que l'arbre 32 comporte ici autant d'éléments de fixation 321 que d'éléments de coupure 22. Les éléments de fixation 321 sont alignés le long de l'axe X32.The shaft 32 includes eccentric fastening elements 321 each intended to be associated with a connecting member 228. It is therefore understood that the shaft 32 here comprises as many fastening elements 321 as cut-off elements 22. The fasteners 321 are aligned along the axis X32.

Par exemple, chaque élément de fixation 321 présente une forme cylindrique centrée sur l'axe X32 et définit un logement interne délimité par des parois de fond perpendiculaires à l'axe X32 et délimité au moins en partie par une paroi latérale 3221 parallèle à l'axe X32 qui connecte les deux parois de fond opposées.For example, each fastening element 321 has a cylindrical shape centered on the axis X32 and defines an internal housing delimited by bottom walls perpendicular to the axis X32 and delimited at least in part by a side wall 3221 parallel to the X32 axis which connects the two opposite bottom walls.

Chaque élément de fixation 321 comporte une première ouverture 3222 et une deuxième ouverture 3223. Les ouvertures 3222 et 3223 sont chacune formées dans la paroi latérale 321 en décrivant un arc de cercle centré autour de l'axe X32.Each fixing element 321 has a first opening 3222 and a second opening 3223. The openings 3222 and 3223 are each formed in the side wall 321 by describing an arc centered around the axis X32.

De préférence, les éléments de fixation 321 sont identiques et les ouvertures 3222 et 3223 respectives des éléments de fixation 321 sont alignées entre elles.Preferably, the fixing elements 321 are identical and the respective openings 3222 and 3223 of the fixing elements 321 are aligned with one another.

L'arbre 32 comporte également des portions de connexion 322, par exemple en forme de tige ou de cylindre, alignés suivant l'axe X32, qui raccordent les éléments de fixation 321 deux à deux. Par exemple, chaque portion de connexion 322 connecte deux éléments de fixation 321 immédiatement voisins par leurs parois de fond se faisant face.The shaft 32 also comprises connection portions 322, for example in the form of a rod or of a cylinder, aligned along the axis X32, which connect the elements of fixing 321 two by two. For example, each connection portion 322 connects two fastening elements 321 immediately adjacent by their facing bottom walls.

La première ouverture 3222 présente une largeur strictement inférieure à la largeur de la deuxième ouverture 3223. Les largeurs des première et deuxième ouvertures sont ici mesurées parallèlement à l'axe X32.The first opening 3222 has a width strictly less than the width of the second opening 3223. The widths of the first and second openings are here measured parallel to the axis X32.

Les ouvertures 3222 et 3223 sont attenantes et forment ainsi une ouverture continue de largeur variable s'étendant au moins sur une partie du pourtour de la paroi latérale 321.The openings 3222 and 3223 are contiguous and thus form a continuous opening of variable width extending at least over part of the periphery of the side wall 321.

Par exemple, la largeur de la deuxième ouverture 3223 est supérieure à la plus grande largeur de la tête de l'organe de liaison 228, c'est-à-dire ici le diamètre de la tête de l'organe de liaison 228. La largeur de la première ouverture 3222 est inférieure à ladite plus grande largeur de l'organe de liaison 228, mais est supérieure à la plus grande largeur de la portion de raccordement de l'organe de liaison 228.For example, the width of the second opening 3223 is greater than the greatest width of the head of the connecting member 228, that is to say here the diameter of the head of the connecting member 228. The width of the first opening 3222 is less than said greatest width of the connecting member 228, but is greater than the greatest width of the connecting portion of the connecting member 228.

Dans la configuration assemblée de l'interface 3, l'arbre 32 est déplaçable, par rotation autour de l'axe X32, entre une première position et une deuxième position.In the assembled configuration of the interface 3, the shaft 32 is movable, by rotation around the axis X32, between a first position and a second position.

Dans la première position, la deuxième ouverture 3223 est alignée avec la fenêtre 332 à laquelle est associé l'élément de fixation 321, ce qui autorise l'insertion de l'organe de liaison 228 à l'intérieur du logement défini par ledit élément de fixation 321.In the first position, the second opening 3223 is aligned with the window 332 with which the fixing element 321 is associated, which allows the insertion of the connecting member 228 inside the housing defined by said fixing 321.

En particulier, la tête de l'organe de liaison 228 peut alors être entièrement insérée à l'intérieur dudit logement. En d'autres termes, la tête de chaque organe de liaison 228 est librement déplaçable en translation par rapport audit élément de fixation 321 pour découpler la palette mobile 42 de chaque organe de liaison 228. En d'autres termes, la tête de l'organe de liaison est retenue à l'intérieur du logement interne. Cette première position correspond à un état déverrouillé de l'interface 3.In particular, the head of the connecting member 228 can then be fully inserted inside said housing. In other words, the head of each connecting member 228 is freely movable in translation relative to said fastening element 321 to decouple the movable pallet 42 from each connecting member 228. In other words, the head of the connecting member is retained inside the internal housing. This first position corresponds to an unlocked state of the interface 3.

On comprend notamment que les têtes des organes de liaison 228 sont ici alignées selon un axe parallèle à l'axe X32.It is understood in particular that the heads of the connecting members 228 are here aligned along an axis parallel to the axis X32.

Dans la deuxième position, la première ouverture 3222 est alignée avec ladite fenêtre 332, ce qui empêche l'insertion de l'organe de liaison 228 à l'intérieur dudit logement ou, au contraire, empêche le retrait de l'organe de liaison 228 hors du logement défini par ledit élément de fixation 321, puisque la largeur de la première ouverture est inférieure à la plus grande largeur de la tête de l'organe de liaison 228. Cette deuxième position correspond à un état verrouillé de l'interface 3.In the second position, the first opening 3222 is aligned with said window 332, which prevents the insertion of the connecting member 228 inside said housing or, on the contrary, prevents the withdrawal of the connecting member 228 outside the housing defined by said fixing element 321, since the width of the first opening is less than the greatest width of the head of the connecting member 228. This second position corresponds to a locked state of the interface 3.

En d'autres termes, grâce à l'association des éléments de fixation 321 et des organes de liaison 228, l'interface de connexion 3 est commutable entre un état verrouillé et un état déverrouillé.In other words, thanks to the combination of the fixing elements 321 and the connecting members 228, the connection interface 3 is switchable between a locked state and an unlocked state.

Dans l'état verrouillé, la structure de support 33 et la palette mobile 32 sont solidaires en translation avec les ponts mobiles 223 des éléments de coupure 22. Ainsi, les contacts mobiles 222 sont déplaçables par l'actionneur 41 entre la position d'ouverture et la position de fermeture.In the locked state, the support structure 33 and the movable pallet 32 are integral in translation with the movable bridges 223 of the breaking elements 22. Thus, the movable contacts 222 can be moved by the actuator 41 between the open position and the closed position.

Dans l'état déverrouillé, la structure de support 33 et la palette mobile 32 sont découplés des ponts mobiles 223 des éléments de coupure 22. Ainsi, l'actionneur 41 n'est plus en mesure de déplacer les contacts mobiles 222 entre la position d'ouverture et la position de fermeture.In the unlocked state, the support structure 33 and the movable pallet 32 are decoupled from the movable bridges 223 of the breaking elements 22. Thus, the actuator 41 is no longer able to move the movable contacts 222 between the position d opening and closing position.

Selon des modes de réalisation, comme illustré sur la figure 3, l'arbre 32 comporte au moins une portion de commande 323 placée à une extrémité de l'arbre 32 et permettant à un opérateur de tourner l'arbre 32 entre la première position et la deuxième position autour de l'axe longitudinal X32. Par exemple, la portion de commande 322 est apte à coopérer par complémentarité de forme avec un outil tel qu'un tournevis ou une clé.According to embodiments, as illustrated in the figure 3 , the shaft 32 comprises at least one control portion 323 placed at one end of the shaft 32 and allowing an operator to turn the shaft 32 between the first position and the second position around the longitudinal axis X32. For example, the control portion 322 is able to cooperate by complementary shape with a tool such as a screwdriver or a wrench.

Selon des modes de mise en œuvre, la portion de commande 322 comporte une empreinte formée sur une surface d'extrémité de l'arbre 32 perpendiculaire à l'axe X32 et présentant une forme de fente, ou une forme cruciforme, ou une forme de polygone, ou toute autre forme analogue.According to embodiments, the control portion 322 has an imprint formed on an end surface of the shaft 32 perpendicular to the axis X32 and having a slit shape, or a cruciform shape, or a shape of polygon, or any other similar form.

En pratique, la portion de commande 323 est accessible depuis l'extérieur du boîtier 31, ici grâce à une ouverture ménagée dans une paroi latérale du boîtier 31, qui permet l'insertion de la tige de l'outil.In practice, the control portion 323 is accessible from the outside of the housing 31, here through an opening formed in a side wall of the housing 31, which allows the insertion of the tool rod.

Selon des variantes, chaque extrémité de l'arbre 32 est pourvue d'une telle portion de commande 323.According to variants, each end of the shaft 32 is provided with such a control portion 323.

Selon d'autres modes de réalisation, comme illustré sur la figure 1, l'interface de connexion 3 comporte un dispositif de manœuvre 324 incluant un organe 325 de commande manuelle, tel qu'un levier pivotant, couplé à l'arbre 32 ou à une portion de commande 323 de l'arbre 32 pour tourner l'arbre 32 autour de son axe longitudinal X32. L'organe 325 est monté sur une face latérale du boîtier 31.According to other embodiments, as illustrated in the figure 1 , the connection interface 3 comprises an operating device 324 including a manual control member 325, such as a pivoting lever, coupled to the shaft 32 or to a control portion 323 of the shaft 32 to rotate the shaft 32 around its longitudinal axis X32. The member 325 is mounted on a lateral face of the housing 31.

Cela permet à un opérateur de commuter facilement l'arbre 32 entre la première position et la deuxième position sans avoir besoin d'utiliser un outil spécifique. Cela permet aussi d'indiquer visuellement à l'opérateur la position dans laquelle se trouve l'arbre 32 et donc de savoir si l'interface 3 est dans l'état verrouillé ou dans l'état déverrouillé.This allows an operator to easily switch the shaft 32 between the first position and the second position without the need to use a specific tool. This also makes it possible to visually indicate to the operator the position in which the shaft 32 is located and therefore to know whether the interface 3 is in the locked state or in the unlocked state.

Selon des exemples, l'arbre 32 est réalisé en un matériau métallique, par exemple en alliage Zamak.According to examples, the shaft 32 is made of a metallic material, for example a Zamak alloy.

En variante, l'arbre 32 est réalisé par exemple en matière plastique.Alternatively, the shaft 32 is made for example of plastic.

De préférence, pour éviter un amorçage électrique entre les phases, si l'arbre 32 est réalisé en matériau électriquement conducteur, par exemple le matériau métallique susmentionné, on prévoit que l'organe de liaison 228 est en matériau électriquement isolant, par exemple en matière plastique comme susmentionné. A l'inverse, si l'organe 228 est réalisé en matériau électriquement conducteur, par exemple un matériau métallique, on prévoit préférentiellement que l'arbre 32 est réalisé en matériau électriquement isolant, tel qu'une matière plastique.Preferably, to avoid electrical ignition between the phases, if the shaft 32 is made of electrically conductive material, for example the aforementioned metallic material, provision is made for the connecting member 228 to be made of electrically insulating material, for example of material plastic as mentioned above. Conversely, if the member 228 is made of electrically conductive material, for example a metallic material, provision is preferably made for the shaft 32 to be made of electrically insulating material, such as a plastic material.

Comme montré sur la figure 3, entre chaque élément 321 successif, l'arbre 32 présente une réduction de diamètre, recevant chacune une cloison inter-phase formée par la structure de support 33, dans un but d'isolation électrique inter-phase. Chaque cloison inter-phase forme une portion de l'une des fenêtres 332.As shown on the figure 3 , between each successive element 321, the shaft 32 has a reduction in diameter, each receiving an inter-phase partition formed by the support structure 33, for the purpose of inter-phase electrical insulation. Each inter-phase partition forms a portion of one of the windows 332.

Par exemple, l'arbre 32 est monobloc, c'est-à-dire que les éléments de fixation 321 sont ici formés d'un seul tenant avec les portions de raccordement 322 et les portions de commande 323.For example, the shaft 32 is in one piece, that is to say that the fastening elements 321 are here formed in one piece with the connection portions 322 and the control portions 323.

Un exemple de fonctionnement pour verrouiller l'interface de connexion 3 est maintenant décrit en référence aux figures 4 à 6.An example of operation for locking the connection interface 3 is now described with reference to figures 4 to 6 .

Initialement, comme illustré sur la figure 4, l'interface 3 est configuration assemblée avec le bloc d'actionnement 4, tout en étant dissociée du bloc de coupure 2. L'arbre 32 est dans la première position.Initially, as illustrated in the figure 4 , the interface 3 is configuration assembled with the actuating block 4, while being dissociated from the cutting block 2. The shaft 32 is in the first position.

Ensuite, l'interface 3 est translatée vers le bloc de coupure 2, ici suivant le sens de déplacement illustré par la flèche F1, le long de la direction de déplacement, jusqu'à ce que la tête de chaque organe de liaison 228 de chacun des éléments de coupure 22 soit reçue dans le logement délimité par l'organe de fixation 321 correspondant après être passée par la deuxième ouverture 3223 de cet organe de fixation 321.Then, the interface 3 is translated to the cut-off block 2, here in the direction of movement illustrated by the arrow F1, along the direction of movement, until the head of each connecting member 228 of each cut-off elements 22 is received in the housing delimited by the corresponding fixing member 321 after having passed through the second opening 3223 of this fixing member 321.

A ce stade, le boîtier 31 est en contact avec l'embase 21, comme représenté sur la figure 5, et peut alors être attaché sur l'embase 21. L'appareil de coupure 1 est alors dans sa configuration assemblée.At this stage, the housing 31 is in contact with the base 21, as shown in the figure 5 , and can then be attached to the base 21. The switching device 1 is then in its assembled configuration.

L'interface 3 est toujours dans l'état déverrouillé, de sorte qu'un déplacement de la palette mobile 42 par l'actionneur 41 n'induit aucun déplacement des contacts mobiles 222 entre les positions d'ouverture et de fermeture.The interface 3 is always in the unlocked state, so that a displacement of the movable pallet 42 by the actuator 41 does not induce any displacement of the movable contacts 222 between the open and closed positions.

Ensuite, l'arbre 32 est tourné vers sa deuxième position, par exemple au moyen de la portion de commande 323 et/ou du levier 325, dans le sens illustré par la flèche F2.Then, the shaft 32 is turned to its second position, for example by means of the control portion 323 and / or of the lever 325, in the direction illustrated by the arrow F2.

A l'issue de la rotation de l'arbre 32, ce stade, comme illustré sur la figure 6, la tête de l'organe de liaison 228 est empêchée de quitter le logement délimité par l'organe de fixation 321 lors d'une translation selon la direction de déplacement, notamment du fait que la première ouverture 3222 a une largeur inférieure à la largeur de la tête de l'organe de liaison 228.At the end of the rotation of the shaft 32, this stage, as illustrated in the figure 6 , the head of the connecting member 228 is prevented from leaving the housing delimited by the attachment 321 during a translation in the direction of movement, in particular because the first opening 3222 has a width less than the width of the head of the connecting member 228.

De préférence, on opère un coincement de chaque élément de fixation 332 sur la tête de l'organe de liaison 228 associé, afin d'éviter un désaccouplement accidentel de ces éléments en cours de fonctionnement, notamment sous l'effet de vibrations.Preferably, a clamping of each fixing element 332 is effected on the head of the associated connecting member 228, in order to avoid accidental uncoupling of these elements during operation, in particular under the effect of vibrations.

De préférence, on assure une liaison sans jeu entre chaque organe 228 et son élément de fixation 332 respectif, notamment par mise en oeuvre de matériaux présentant une certaine élasticité, et/ou par des détails de formes complémentaires.Preferably, there is provided a backlash-free connection between each member 228 and its respective fixing element 332, in particular by using materials having a certain elasticity, and / or by details of complementary shapes.

L'interface 3 est dans l'état verrouillé, de sorte qu'un déplacement de la palette mobile 42 en translation selon l'axe de déplacement entraîne un déplacement correspondant des contacts mobiles 222 entre les positions d'ouverture et de fermeture.The interface 3 is in the locked state, so that a displacement of the movable pallet 42 in translation along the axis of displacement causes a corresponding displacement of the movable contacts 222 between the open and closed positions.

L'interface 3 permet de réduire l'espace nécessaire pour monter et coupler le bloc d'actionnement 4 au bloc de coupure 2 lors de l'installation de l'appareil 1, puisqu'il n'est plus nécessaire de déplacer la palette mobile 42 en translation verticale pour l'accrocher aux organes de liaison 228. Au contraire, comme expliqué précédemment, le verrouillage est obtenu en tournant l'arbre 32 après avoir positionné l'interface 3 en contact avec le bloc de coupure 2 par translation selon la direction de déplacement.The interface 3 makes it possible to reduce the space necessary to mount and couple the actuation block 4 to the cut-off block 2 during the installation of the device 1, since it is no longer necessary to move the movable pallet 42 in vertical translation to hang it on the connecting members 228. On the contrary, as explained above, the locking is obtained by turning the shaft 32 after positioning the interface 3 in contact with the cut-off block 2 by translation along the direction of travel.

De façon analogue, le déverrouillage et le démontage du bloc d'actionnement et du bloc de coupure 2 sont également simplifiés, puisque le déverrouillage est obtenu simplement en tournant l'arbre 32 dans le sens opposé.Similarly, the unlocking and disassembly of the actuation block and the cut-off block 2 are also simplified, since the unlocking is obtained simply by turning the shaft 32 in the opposite direction.

De plus, l'interface de connexion 3 peut rester dans l'état déverrouillé même lorsqu'elle est montée sur le bloc de coupure 2. Cela permet à un opérateur d'alimenter l'actionneur 41 et déplacer la palette mobile 42, par exemple pour effectuer des tests de l'appareil 1 en conditions réelles, sans pour autant mettre en mouvement les contacts mobiles 222. Ainsi, le risque d'accident électrique est réduit.In addition, the connection interface 3 can remain in the unlocked state even when it is mounted on the cut-off block 2. This allows an operator to power the actuator 41 and move the movable pallet 42, for example to carry out tests of the apparatus 1 in real conditions, without however setting the moving contacts 222 in motion. Thus, the risk of electrical accident is reduced.

Selon des modes de réalisation optionnels, comme illustré à la figure 2, la tête sphérique de l'organe de liaison 228 comporte des faces latérales plates 2281 en forme de méplats. Cela permet de réduire la largeur des ouvertures 311 et des fenêtres 332 et donc de réduire l'encombrement latéral de l'appareil 1. Dans ce cas, la plus grande largeur de la tête de l'organe de liaison 228 est mesurée entre les faces latérales plates 2281.According to optional embodiments, as illustrated in the figure 2 , the spherical head of the connecting member 228 has flat side faces 2281 in the form of flats. This makes it possible to reduce the width of the openings 311 and of the windows 332 and therefore to reduce the lateral dimensions of the device 1. In this case, the greatest width of the head of the connecting member 228 is measured between the faces. flat side 2281.

Selon des variantes non illustrées, l'organe de liaison 228 peut présenter une forme différente, par exemple une forme de soupape ou de vis avec une tête plate.According to variants not illustrated, the connecting member 228 can have a different shape, for example a valve or screw shape with a flat head.

Les modes de réalisation et les variantes envisagés ci-dessus peuvent être combinés entre eux pour donner naissance à de nouveaux modes de réalisation.The embodiments and variants envisaged above can be combined with one another to give rise to new embodiments.

Claims (10)

Appareil de coupure (1) d'un courant électrique, comportant : - un bloc de coupure (2) à contact séparables incluant au moins un élément de coupure (22), chaque élément de coupure comprenant un contact électrique fixe (221), un contact électrique mobile (222) déplaçable en translation par rapport aux contacts électriques fixes entre une position de fermeture et une position d'ouverture, et un organe de liaison (228) solidaire en translation avec le contact électrique mobile ; - un bloc d'actionnement (4) comportant un actionneur (41) et une palette mobile (42) couplée à l'actionneur ; l'appareil de coupure étant caractérisé en ce qu'il comporte en outre une interface de connexion (3) intercalée entre le bloc de coupure et le bloc d'actionnement, l'interface de connexion comportant un arbre (32) et une structure de support (33) solidaire en translation de la palette mobile (42), l'arbre (32) étant monté pivotant autour de son axe longitudinal (X32) par rapport à la structure de support (33), l'arbre (32) incluant au moins un élément de fixation à excentrique (321), chaque élément de fixation à excentrique (321) délimitant un logement interne apte à recevoir une tête d'un des organes de liaison (228), l'interface de connexion étant commutable, par rotation de l'arbre (32) autour de son axe longitudinal (X32), entre : - un état verrouillé, dans lequel la tête de chaque organe de liaison (228) est retenue à l'intérieur du logement interne d'un des éléments de fixation à excentrique (321) pour maintenir la palette mobile (42) solidaire en translation avec chaque organe de liaison (228), et - un état déverrouillé, dans lequel la tête de chaque organe de liaison (228) est librement déplaçable en translation par rapport audit élément de fixation à excentrique (321) pour découpler la palette mobile de chaque organe de liaison. Apparatus for cutting (1) an electric current, comprising: - a cut-off block (2) with separable contact including at least one cut-off element (22), each cut-off element comprising a fixed electrical contact (221), a movable electrical contact (222) movable in translation relative to the electrical contacts fixed between a closed position and an open position, and a connecting member (228) integral in translation with the movable electrical contact; - an actuation block (4) comprising an actuator (41) and a movable pallet (42) coupled to the actuator; the breaking device being characterized in that it further comprises a connection interface (3) interposed between the breaking block and the actuating block, the connection interface comprising a shaft (32) and a structure support (33) integral in translation with the movable pallet (42), the shaft (32) being pivotally mounted about its longitudinal axis (X32) relative to the support structure (33), the shaft (32) including at least one eccentric fixing element (321), each eccentric fixing element (321) delimiting an internal housing capable of receiving a head of one of the connecting members (228), the connection interface being switchable, by rotation of the shaft (32) around its longitudinal axis (X32), between: - a locked state, in which the head of each connecting member (228) is retained inside the internal housing of one of the eccentric fixing elements (321) to keep the movable pallet (42) integral in translation with each link member (228), and - An unlocked state, in which the head of each connecting member (228) is freely movable in translation relative to said eccentric fixing element (321) to decouple the movable pallet from each connecting member. Appareil de coupure selon la revendication 1, caractérisé en ce que chaque élément de fixation à excentrique (321) présente une forme cylindrique centrée sur l'axe longitudinal (X32), le logement interne étant délimité au moins en partie par une paroi latérale (3221) parallèle à l'axe longitudinal (X32) et comprenant une première ouverture (3222) et une deuxième ouverture (3223), la largeur de la première ouverture (3222) étant largeur strictement inférieure à la largeur de la deuxième ouverture (3223), les première et deuxième ouvertures (3222, 3223) étant attenantes et formant une ouverture continue de largeur variable, la largeur de la deuxième ouverture (3223) étant supérieure à la plus grande largeur de la tête de l'organe de liaison (228), la largeur de la première ouverture (3222) étant inférieure à la plus grande largeur de la tête de l'organe de liaison (228), en ce que, dans l'état verrouillé, chaque première ouverture (3222) est alignée et placée en regard avec un organe de liaison (228) et en ce que, dans l'état déverrouillé, chaque deuxième ouverture (3223) est alignée et placée en regard avec un organe de liaison (228).Cutting device according to claim 1, characterized in that each eccentric fixing element (321) has a cylindrical shape centered on the longitudinal axis (X32), the internal housing being delimited at least in part by a side wall (3221 ) parallel to the longitudinal axis (X32) and comprising a first opening (3222) and a second opening (3223), the width of the first opening (3222) being width strictly less than the width of the second opening (3223), the first and second openings (3222, 3223) being contiguous and forming a continuous opening of variable width, the width of the second opening (3223) being greater than the greatest width of the head of the connecting member (228), the width of the first opening (3222) being less than the greatest width of the head of the connecting member (228), in that , in the locked state, each first opening (3222) is aligned and placed opposite with a connecting member (228) and in that , in the unlocked state, each second opening (3223) is aligned and placed opposite with a connecting member (228). Appareil de coupure selon l'une quelconque des revendications précédentes, caractérisé en ce que l'arbre comporte au moins une portion de commande (323) placée à une extrémité de l'arbre (32) pour tourner l'arbre (32) autour de son axe longitudinal (X32), la portion de commande (322) étant apte à coopérer par complémentarité de forme avec un outil.Cutting device according to any one of the preceding claims, characterized in that the shaft has at least one control portion (323) placed at one end of the shaft (32) to turn the shaft (32) around its longitudinal axis (X32), the control portion (322) being able to cooperate by form complementarity with a tool. Appareil de coupure selon la revendication 3, caractérisé en ce que la portion de commande (322) comporte une empreinte formée sur une surface d'extrémité de l'arbre (32) perpendiculaire à l'axe longitudinal (X32), par exemple une empreinte présentant une forme de fente, ou une forme cruciforme, ou une forme de polygone.Cutting device according to claim 3, characterized in that the control portion (322) has an indentation formed on an end surface of the shaft (32) perpendicular to the longitudinal axis (X32), for example an indentation having a slit shape, or a cruciform shape, or a polygon shape. Appareil de coupure selon l'une quelconque des revendications précédentes, caractérisé en ce que l'interface de connexion (3) comporte un dispositif de manœuvre (324) incluant un organe (325) de commande manuelle couplé à l'arbre (32) pour tourner l'arbre (32) autour de son axe longitudinal (X32).Cutting device according to any one of the preceding claims, characterized in that the connection interface (3) comprises an operating device (324) including a manual control member (325) coupled to the shaft (32) for turn the shaft (32) around its longitudinal axis (X32). Appareil de coupure selon la revendication 5, caractérisé en ce que l'organe (325) de commande manuelle est un levier pivotant monté sur une face latérale d'un boîtier (31) de l'interface de connexion (3).Cutting device according to claim 5, characterized in that the manual control member (325) is a pivoting lever mounted on a side face of a housing (31) of the connection interface (3). Appareil de coupure selon l'une quelconque des revendications précédentes, caractérisé en ce que la tête de l'organe de liaison (228) présente une forme sphérique.Cutting device according to any one of the preceding claims, characterized in that the head of the connecting member (228) has a spherical shape. Appareil de coupure selon la revendication 7, caractérisé en ce que la tête de l'organe de liaison (228) comporte des faces latérales plates (2281).Cutting device according to claim 7, characterized in that the head of the connecting member (228) has flat side faces (2281). Appareil de coupure selon l'une quelconque des revendications précédentes, caractérisé en ce que l'arbre (32) est monobloc.Cutting device according to any one of the preceding claims, characterized in that the shaft (32) is in one piece. Appareil de coupure selon l'une quelconque des revendications précédentes, caractérisé en ce que l'arbre (32) est réalisé en un matériau métallique, par exemple en alliage Zamak.Cutting device according to any one of the preceding claims, characterized in that the shaft (32) is made of a metallic material, for example of Zamak alloy.
EP19204397.4A 2018-10-22 2019-10-21 Apparatus for interrupting an electric current Active EP3644339B1 (en)

Applications Claiming Priority (1)

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FR1859735A FR3087576B1 (en) 2018-10-22 2018-10-22 ELECTRIC CURRENT CUTTING DEVICE

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WO2006120149A1 (en) * 2005-05-13 2006-11-16 Abb Service S.R.L. Circuitbreaker with suspended mobile contact assembly
EP2936534A1 (en) 2012-12-18 2015-10-28 Schneider Electric Industries SAS Modular electrical switch device comprising at least one unipolar cut-off unit and a switch assembly comprising such devices
EP3333871A1 (en) * 2016-12-08 2018-06-13 Schneider Electric Industries SAS Electrical apparatus for cutting an electrical current

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EP3644339B1 (en) 2021-05-26
US10872738B2 (en) 2020-12-22
FR3087576B1 (en) 2020-11-13
CN111081499A (en) 2020-04-28
US20200126736A1 (en) 2020-04-23
FR3087576A1 (en) 2020-04-24

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